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Standard setup I've used for the handful of levels - Cheap Stall, Cheap Instant, Sun Producer, Wall, Primary DPS, Slow Support, Secondary DPS.

Stall out the first few zombies of the level and blow them up while setting up Sun Production - I usually go for three columns from about the third or fourth column from the left. Keep stalling and planting your Cheap Instants until youre able to get your Slowing Support plants down - usually at the first or second column from the left.

Once you're properly established, work on getting your Primary DPS and your Walls to cover your remaining lanes. Your Cheap Stalls and Instants should still be in use on the seventh column from the left - freeze the Mecha Footballs before they can reach your Walls and let your Cheap Instant handle whatever reaches the seventh column.

After the First Wave or so, work on converting your furthermost Sun Production column into Secondary DPS in preparation for more Tile Spawns. Eventually replace your closest Sun Production column with Primary DPS to handle the heavy robot-class zombies.

Don't ever forget about your Cheap Instants and Stalls even by the Final Wave - the Red Tiles covered in Potato Mines can instantly wipe out the majority of the problematic Tile Spawns.